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HT7733A Integrated Circuit Chip PFM Step-up DC/DC Converter

    Buy cheap HT7733A Integrated Circuit Chip PFM Step-up DC/DC Converter from wholesalers
     
    Buy cheap HT7733A Integrated Circuit Chip PFM Step-up DC/DC Converter from wholesalers
    • Buy cheap HT7733A Integrated Circuit Chip PFM Step-up DC/DC Converter from wholesalers

    HT7733A Integrated Circuit Chip PFM Step-up DC/DC Converter

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    Brand Name : HOLTEK
    Model Number : HT7733A
    Certification : Original Factory Pack
    Price : Negotiation
    Payment Terms : T/T, Western Union,PayPal, Western Union
    Supply Ability : 5200PCS
    Delivery Time : 1 Day
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    HT7733A Integrated Circuit Chip PFM Step-up DC/DC Converter

    PFM Step-up DC/DC Converter

    Features

    ►Low start-up voltage: 0.7V (Typ.)

    ►High efficiency: 85% (Typ.)

    ►High output voltage accuracy: 2.5%

    ►Output voltage: 2.7V, 3.0V, 3.3V, 5.0V

    ►Ultra low supply current IDD: 5A (Typ.)

    ►Low ripple and low noise

    ►Low shutdown current: 0.5A (Typ.)

    ►TO-92, SOT-89, SOT-23 and SOT-25 package Applica


    Applications

    ►Palmtops/PDAs

    ►Portable communicators/Smartphones

    ►Cameras/Camcorders

    ►Battery-powered equipment Ge



    General Description

    The HT77XXA series is a set of PFM step-up DC/DC converter with high efficiency and low ripple. The series features extremely low start-up voltage and high output voltage accuracy. They require only three external components to provide a fixed output voltage of 2.7V, 3.0V, 3.3V or 5.0V. CMOS technology ensures ultra low supply current and makes them ideal for battery-operated applications powered from one or more cells.


    The HT77XXA consists of an oscillator, a PFM control circuit, a driver transistor, a reference voltage unit, and a high speed comparator. They employ pulse frequency modulation (PFM) for minimum supply current and ripple at light output loading. These devices are available in space saving TO-92, SOT-89, SOT-23 and SOT-25 packages. For SOT-25 package, it also build-in a chip enable function to reduce power consumption during shutdown mode.



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